Treatment tool for endoscope

Abstract

As a wire moves in a first direction, which is an operating part side, relative to a grip part and a bendable part, the grip part is closed, and the bendable part is bent in a state where the grip part is closed. A coil spring is moved in a second direction, which is a distal end part side, in response to a pushing-in operation with respect to a piston and moves the wire in the first direction relative to the grip part and the bendable part by pushing the grip part and the bendable part in the second direction as being moved in the second direction.

What is claimed is: 
     
         1 . A treatment tool for an endoscope comprising:
 an insertion part that has a distal end part provided with an openable and closable grip part and a bendable part, which is provided adjacent to the distal end part and is bendable, and that is insertable into a body;   an operating part that has a gripped part to be gripped by a user and an operating member enabling the user gripping the gripped part to perform a pushing-in operation into the gripped part; and   a transmitting part that transmits the pushing-in operation with respect to the operating member to the grip part and the bendable part,   wherein the transmitting part has
 a first transmitting member that closes the grip part by moving in a first direction, which is a side of the operating part, relative to the grip part and the bendable part and bends the bendable part in a state where the grip part is closed, and 
 a second transmitting member that is moved in a second direction, which is a side of the distal end part, in response to the pushing-in operation with respect to the operating member and moves the first transmitting member in the first direction relative to the grip part and the bendable part by pushing the grip part and the bendable part in the second direction as being moved in the second direction, 
   the operating member is configured to slide in the first direction and the second direction,   one end of the second transmitting member is fixed to the operating member,   another end of the second transmitting member is fixed to the bendable part, and   the first transmitting member is fixed to the gripped part, a position of the first transmitting member relative to the gripped part is the same between a case where the grip part is opened and a case where the grip part is closed, and the position of the first transmitting member relative to the gripped part is the same between a case where the bendable part is bent and a case where the bendable part is not bent.   
     
     
         2 . The treatment tool for the endoscope according to  claim 1 ,
 wherein the bendable part bends in the state where the grip part is closed after the grip part is closed in response to the pushing-in operation with respect to the operating member.   
     
     
         3 . The treatment tool for the endoscope according to  claim 2 ,
 wherein an operation resistance in a case of bending the bendable part based on movement of the first transmitting member is greater than an operation resistance in a case of closing the grip part based on the movement of the first transmitting member.   
     
     
         4 . The treatment tool for the endoscope according to  claim 3 , further comprising:
 an elastic member that hinders bending of the bendable part.   
     
     
         5 . The treatment tool for the endoscope according to  claim 4 , further comprising:
 a friction member that hinders bending of the bendable part.   
     
     
         6 . The treatment tool for the endoscope according to  claim 5 ,
 wherein at least a part of the bendable part is formed by a bendable member.   
     
     
         7 . The treatment tool for the endoscope according to  claim 4 ,
 wherein at least a part of the bendable part is formed by a bendable member.   
     
     
         8 . The treatment tool for the endoscope according to  claim 4 ,
 wherein the first transmitting member is a wire of which one end is fixed to the gripped part.   
     
     
         9 . The treatment tool for the endoscope according to  claim 3 , further comprising:
 a friction member that hinders bending of the bendable part.   
     
     
         10 . The treatment tool for the endoscope according to  claim 9 ,
 wherein at least a part of the bendable part is formed by a bendable member.   
     
     
         11 . The treatment tool for the endoscope according to  claim 3 ,
 wherein at least a part of the bendable part is formed by a bendable member.   
     
     
         12 . The treatment tool for the endoscope according to  claim 3 ,
 wherein the first transmitting member is a wire of which one end is fixed to the gripped part.   
     
     
         13 . The treatment tool for the endoscope according to  claim 3 ,
 wherein the second transmitting member is a coil spring that extends from the operating member to the insertion part.   
     
     
         14 . The treatment tool for the endoscope according to  claim 3 ,
 wherein the operating member is a piston that is able to be pushed into the gripped part having a hollow shape.   
     
     
         15 . The treatment tool for the endoscope according to  claim 2 ,
 wherein the first transmitting member is a wire of which one end is fixed to the gripped part.   
     
     
         16 . The treatment tool for the endoscope according to  claim 2 ,
 wherein the second transmitting member is a coil spring that extends from the operating member to the insertion part.   
     
     
         17 . The treatment tool for the endoscope according to  claim 2 ,
 wherein the operating member is a piston that is able to be pushed into the gripped part having a hollow shape.   
     
     
         18 . The treatment tool for the endoscope according to  claim 1 ,
 wherein the first transmitting member is a wire of which one end is fixed to the gripped part.   
     
     
         19 . The treatment tool for the endoscope according to  claim 1 ,
 wherein the second transmitting member is a coil spring that extends from the operating member to the insertion part.   
     
     
         20 . The treatment tool for the endoscope according to  claim 1 ,
 wherein the operating member is a piston that is able to be pushed into the gripped part having a hollow shape.